Realistically, almost no one ever has their minds changed by a single argument heard once. People do sometimes change their minds, but it usually requires hearing the arguments again, and again, and again, and again, and again, and.... And even then, when they've finally reached a tipping point and changed their views, it won't happen instantly. It might be months later.
But meanwhile, making the same arguments and being asked the same questions a thousand times over can be very wearying for the soul. And that's what I was trying to get at with this comic strip.
The art for this one looks very "Doonesbury" to my eyes, especially the main character's express in panel 4 and body language in panels 5 and 6. Which is fine with me, I'm a fan of Doonesbury from way back. 90% of what I know about the Nixon administration I learned from reading old Doonesbury books.